<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<!--转到该控制器-->
<!--<%=request.getContextPath()%>-->
<form action="/root/add">
<!--<input type="button">-->
    <input type="text" name="userid">
    <input type="text" name="username">
    <input type="text" name="userpassword">
    <input type="submit" value="提交">

</form>
</body>
</html>